pci: layerscape: device tree fixup based on SoC and

lx2160a rev1 requires layerscape_gen4 device tree fixup and
lx2160a rev2 requires layerscape device tree fixup.
Add device tree fixup for lx2160a based on SoC and Version.

Signed-off-by: Wasim Khan <wasim.khan@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/drivers/pci/pcie_layerscape_fixup_common.h b/drivers/pci/pcie_layerscape_fixup_common.h
index ecf4f44..e1970a5 100644
--- a/drivers/pci/pcie_layerscape_fixup_common.h
+++ b/drivers/pci/pcie_layerscape_fixup_common.h
@@ -17,5 +17,6 @@
 void ft_pci_setup_ls_gen4(void *blob, bd_t *bd);
 #endif /* CONFIG_PCIE_LAYERSCAPE_GEN4 */
 int pcie_next_streamid(int currentid, int id);
+int pcie_board_fix_fdt(void *fdt);
 
 #endif //_PCIE_LAYERSCAPE_FIXUP_COMMON_H_